## Dividing Fractions Word Problem

• 0:00 - 0:01
• 0:01 - 0:06
A baby's T-shirt requires 4/5
yards of fabric, or 4/5 of a
• 0:06 - 0:07
yard of fabric.
• 0:07 - 0:11
How many T-shirts can be
• 0:11 - 0:13
So what we want to do is we
essentially want to say how
• 0:13 - 0:18
many groups of 4/5 of a yard
can we make with 48 yards?
• 0:18 - 0:25
So you literally view this as
we want to take 48 yards and
• 0:25 - 0:30
divide it into groups of 4/5
of a yard, and say how many
• 0:30 - 0:31
groups are there?
• 0:31 - 0:32
Because each of those
groups can make
• 0:32 - 0:34
one to baby's T-shirt.
• 0:34 - 0:37
If you give me 4/5 of a yard,
one baby's T-shirt, so the
• 0:37 - 0:41
number of groups of 4/5 is the
number of babies' T-shirts.
• 0:41 - 0:43
Now, when we divide by a
fraction, we just have to
• 0:43 - 0:46
remember that that is the same
thing, that is completely
• 0:46 - 0:51
equivalent to multiplying
times the
• 0:51 - 0:52
reciprocal of the fraction.
• 0:52 - 0:57
So if we have 4/5 here,
that'll be 5/4, the
• 0:57 - 0:58
reciprocal.
• 0:58 - 1:00
Now, you still might say, hey, I
have a whole number here and
• 1:00 - 1:02
a fraction, and you just have
to remember any whole number
• 1:02 - 1:04
can be written as a fraction.
• 1:04 - 1:11
This is the same thing
as 48/1 times 5/4.
• 1:11 - 1:14
Now, we could just multiply it
out at this point and figure
• 1:14 - 1:19
out what 48 times 5 is and
that'll be over 4, but that'll
• 1:19 - 1:22
get big numbers and it'll be
hard to kind of divide and all
• 1:22 - 1:24
that, but we could divide at
this stage right here.
• 1:24 - 1:26
We could divide the numerator
and the denominator by 4.
• 1:26 - 1:30
Or we could say, look, this is
going to be equal to 48 times
• 1:30 - 1:34
5, whatever that is, over 4.
• 1:34 - 1:36
Now, let's divide the
numerator by 4.
• 1:36 - 1:40
Well, we could divide 48 by 4,
and we will get to 12, and
• 1:40 - 1:42
whatever we did to the
numerator, we have to do to
• 1:42 - 1:46
the denominator, so if we
divide 4 by 4, we get 1.
• 1:46 - 1:51
So then we're left with 12 times
5, which is equal to 60.
• 1:51 - 1:57
12 times 5, which is equal to
60/1, which is the exact same
• 1:57 - 1:59
thing as 60.
• 1:59 - 2:03
So you can actually make 60
children's or babies' T-shirts
• 2:03 - 2:07
from 48 yards if each of
them use 4/5 of a yard.
• 2:07 - 2:08
Title:
Dividing Fractions Word Problem
Description:

U02_L2_T3_we5 Dividing Fractions Word Problem

more » « less
Video Language:
English
Duration:
02:08
 brettle edited English subtitles for Dividing Fractions Word Problem brettle edited English subtitles for Dividing Fractions Word Problem brettle edited English subtitles for Dividing Fractions Word Problem

Incomplete

• brettle